~/compare/stytch

AuthSec vs Stytch

Stytch's passkey UX and its 2025 Connected Apps MCP stack are genuinely strong. AuthSec adds cross-org agent delegation (not just single-user On-Behalf-Of exchange), SPIFFE/SPIRE workload identity, and a Connector Broker that ships instead of a build-your-own-token-store recommendation.

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Decision snapshot

Best for AI agentsAuthSec

Best for consumer-grade passkey/passwordless UXStytch

Agent-native fitAuthSec-first

Open-source auth + authzAuthSec only

Verified 2026-07-07 · full sources below

Quick take

Where each platform is genuinely strong, before the feature-by-feature detail.

AuthSec

SPIFFE/SPIRE workload identity and M2M private_key_jwt — Stytch has neither

XAA supports genuine cross-org delegation; Stytch's On-Behalf-Of token exchange is scoped to a single user's own connected apps

Connector Broker is a shipped credential-injection product; Stytch's MCP guidance tells developers to build their own token store

Device Authorization Grant, CIBA, and PAR are all supported; Stytch documents none of the three

Stytch

Passkey/WebAuthn UX is best-in-class: conditional UI on by default, native cross-device flow, two-API integration

Connected Apps (2025) is a serious, purpose-built OAuth 2.1 stack for MCP with PKCE, DCR, and dual discovery specs (RFC 8414 + RFC 9728)

B2B SAML/OIDC/SCIM fundamentals are mature and self-serve, with per-IdP setup guides for Okta, Entra, and Google Workspace

Generous free tier (10k MAU, 5 SSO/SCIM connections, 1,000 M2M tokens/month) lowers the barrier to trial the full B2B suite

Feature matrix

Every claim below is sourced — see the footnote under each competitor answer.

28 areas where AuthSec leads

01Agents & MCP

Feature	AuthSec	Stytch
Dynamic Client Registration (RFC 7591/7592) Connected Apps (GA 2025) supports opt-in Dynamic Client Registration. — source	✓	✓
PKCE-only + resource indicators (RFC 8707) PKCE (S256) is mandatory. — source	✓	✓
AS metadata & OIDC discovery (RFC 8414) RFC 8414 Authorization Server Metadata plus RFC 9728 Protected Resource Metadata discovery. — source	✓	✓
Lazy resource-server binding with admin approval	✓	Not documented

02Workload identity

03Enterprise authentication

04Access & governance

05Standards & RFCs

Best choice by use case

Pick the platform based on workload shape, not just protocol coverage.

Use case
Best choice

Consumer passwordless / passkey login

Stytch

AI agents calling MCP servers

AuthSec

Cross-org agent identity delegation (XAA)

AuthSec

SPIFFE/SPIRE workload identity

AuthSec

Self-hosted, open-source IAM

AuthSec

Verify it yourself.

Every capability above is open source and documented. Read the code, run it yourself, or talk to us about your specific migration.

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